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Structural studies of an arabinoxylan isolated from Litsea glutinosa (Lauraceae)

✍ Scribed by H.M.T.B. Herath; N.Savitri Kumar; K.M.Swarna Wimalasiri

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 494 KB
Volume: 198
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(90)84304-d

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✦ Synopsis

A water-soluble arabinoxylan (D-xylose and L-arabinose in the molar ratio 1.0:3.4) was isolated from the mucilaginous bark of Litsea glutinosa (Lauraceae). The results of methylation analysis, partial hydrolysis, and 'H-and 13C-n.m.r. spectroscopy indicated a backbone of (1+4)-linked P-D-xylopranosyl residues substituted at both positions 2 and 3 with side chains composed of either single or (l-+3)-linked arabinofuranosyl residues. Both cu-L-and FL-arabinofuranosyl residues were present. It is possible that side chains composed of two P-L-arabinofuranosyl residues are attached mainly at O-2 of some xylosyl residues.

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